-
Notifications
You must be signed in to change notification settings - Fork 116
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
feat: add sse with reverseproxy example (#121)
* feat: add sse with reverse proxy * update * update * update
- Loading branch information
1 parent
a9beebb
commit 4c998c1
Showing
5 changed files
with
132 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,71 @@ | ||
| /* | ||
| * Copyright 2022 CloudWeGo Authors | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package main | ||
|
|
||
| import ( | ||
| "context" | ||
| "net/http" | ||
| "time" | ||
|
|
||
| "github.com/cloudwego/hertz/pkg/app" | ||
| "github.com/cloudwego/hertz/pkg/app/client" | ||
| "github.com/cloudwego/hertz/pkg/app/server" | ||
| "github.com/hertz-contrib/reverseproxy" | ||
| "github.com/hertz-contrib/sse" | ||
| ) | ||
|
|
||
| var proxy *reverseproxy.ReverseProxy | ||
|
|
||
| func main() { | ||
| proxy, _ = reverseproxy.NewSingleHostReverseProxy("http://127.0.0.1:8001", | ||
| client.WithResponseBodyStream(true), | ||
| ) | ||
|
|
||
| h := server.Default(server.WithHostPorts("127.0.0.1:8080")) | ||
| h.GET("/proxy", proxyToServer) | ||
| h.GET("/proxy/:path", proxyToServer) | ||
|
|
||
| h2 := server.Default(server.WithHostPorts("127.0.0.1:8001")) | ||
| h2.GET("/sse", sseHandler) | ||
|
|
||
| go h.Spin() | ||
| h2.Spin() | ||
| } | ||
|
|
||
| func proxyToServer(ctx context.Context, c *app.RequestContext) { | ||
| path := c.Param("path") | ||
| c.Request.Header.Set("Secret", "123456") | ||
| c.Request.URI().SetPath(path) | ||
| proxy.ServeHTTP(ctx, c) | ||
| } | ||
|
|
||
| func sseHandler(ctx context.Context, c *app.RequestContext) { | ||
| // you must set status code and response headers before first render call | ||
| c.Response.Header.Set("X-Accel-Buffering", "no") | ||
| c.SetStatusCode(http.StatusOK) | ||
| s := sse.NewStream(c) | ||
| for i := 0; i < 10; i++ { | ||
| event := &sse.Event{ | ||
| Event: "timestamp", | ||
| Data: []byte(time.Now().Format(time.RFC3339)), | ||
| } | ||
| err := s.Publish(event) | ||
| if err != nil { | ||
| return | ||
| } | ||
| time.Sleep(200 * time.Millisecond) | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| ## sse | ||
|
|
||
| ### Introduction | ||
|
|
||
| This example shows how to use sse with reverseproxy. | ||
|
|
||
| ### Usage | ||
|
|
||
| * Start server | ||
|
|
||
| ```bash | ||
| go run main.go | ||
| ``` | ||
|
|
||
| * Test | ||
| ```bash | ||
| curl -N --location http://localhost:8080/proxy/sse | ||
| ``` | ||
|
|
||
| Result: | ||
| ```bash | ||
| > curl -N --location http://localhost:8080/proxy/sse | ||
| event:timestamp | ||
| data:2023-10-09T22:32:14+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:14+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:14+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:14+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:14+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:15+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:15+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:15+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:15+08:00 | ||
|
|
||
| event:timestamp | ||
| data:2023-10-09T22:32:15+08:00 | ||
| ``` |